Ge Xian Weng Ban Lan Gen Instant Herbal Tea is a Chinese herbal tea that features Ban Lan Gen, which is the Chinese term for Isatis indigotica root. This herbal tea is often used to support the respiratory system and promote overall well-being. Ban Lan Gen is known for its potential to clear heat and toxins from the body, and it is commonly used in traditional Chinese medicine during times of discomfort associated with heat or damp-heat conditions.